Platform computing-scale.



C. G. STRUBLER.

PLATFORM COMPUTING SCALE.

APPLICATION FILED FEB. a4. 1912. 1 213 294, Patented Jan. 23, 1917. 3 SHEETS-SHEET l.

. 70 65 Z 65 I v I 0 fix/8:21:57".

c. e. STRUBLER.

PLATFORM COMPUTING SCALE.

APPLICATION FILED FEB. 14, I912.

Patented Jan. 23,1917. I

3 SHEETS-SHEET 2.

h nans'km m m n c. G. STRUBLEE PLATFORM COMPUTING SCALE.

I APPLICATION FILED FEB. 14- I912 a SHEETS-SHEET 3 &

' Patnted 'Jan. 23,1917.

UNITED. STATES PATENT OFFICE.

CHARLES G. STRUBLER, OF EIIKHART, INDIANA, ASSIGNOR TO STRUBLER COMPUTING SCALE COMPANY, OF'ELKHART, INDIANA, A CORPORATION OF INDIANA.

PLATFORM COMPUTING-SCALI Specification of Letters Patent. Patented J 311,23, 1917,

Application filed February 14, 1912. Serial No. 677,574.

To all whom it may concern:

, Be it known that I, CHARLES G. STRUBLER, a citizen of the United States, anda resident of Elkhart, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Platform Computing-Scales; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a )art of this specification.

Iy invention relates to improvements in weighing and price computing scales of the gravity operated type such as have a rotating weight and price cylinder inclosed in an outer casing, preferably having sight openings, for. the dealer and customer, through the former of which can be read the total computed value at a. given price, and through latter of which may be exposed to the customers view the total weight value. The object of my invention is to increase -the capacity of scales of this type; to provide a novel construction and arrangement of load counter-balancing or counter-poising elements, and to equalize and modify the effect of the counter-balancing elements on the weight and price cylinder, thereby increasing its sensibility.

It has for its further object novel details of construction and combinations and arrangements of parts, all as hereinafter and more fully described and particularly pointed out in the claims.

In the accompanying drawings,Figure 1 is a view partly in vertical section and partly in elevation of'ascale made in accordance with and embodying my invention. Fig. 2 is a plan section of line 2 of Fig. 1. Fig. 3 is a front elevation of the upper part of the scale, with parts broken away. Fig. 4 is a plan view of the lower parts of the scale. with" part of the platform partly broken away. Fig. 5 is a fragmentary view of the rearpart of the cylinder casing, showing the sight opening through which the customer may read the weight scale.

As shown in said drawings 10, is the scale base and 11 a fulcrum stand supported thereon, and 12 and 13 are primary and sec- 1 ondary scale beams fulcrumed on said stand.

.In accordance with one feature of the invention the stand is provided with two pairs of bearings, one pair at the front and the other at the rear thereof, and the beams 12 and 13 are bifurcated as shown in Fig. 4, and the arms of said beams are equipped with the knife bearing pivots 16, 16 to engage thebearings on the stand and the beams are connected to each other by the link.17. The main beam is counterwelghted at 18 at its outer end and it is connected at 20 to the draw bar 21 that extends upwardly for connection withthe extension 22 of the rack 23, which meshes with a pinion 24 thatfis fixed to the shaft 25 of the rotative weight and price bearing chart or charts 26. The shaft 25 of the said charts or cylinders has rotative bearing (in a manner not shown) at the end walls of a casing 27 which incloses said cylinders in a familiar manner, and is supported on the upper ends of standards I 28 that rise from the base 10. The said casing 27 is provided with the usual elongated front opening 30 and the rear sight opening 31, through which the salesman and customer may read the total computed values and the total weight values, respectively.

The rack bar extension 22 is provided at its free end with a weight 32, and between its end with an upstanding stud 33 to which is centrally pivoted an evener bar 34:. 36, 36 designate straps or tapes which are connected at their lower ends to the evener bar 34 and are trained at their upper ends about and are fixed to the eccentric segmental ends 37 of weighted, load counter-poise levers or pendulums 38, the weights 39 being adjustably mounted on said levers, as

I best shownin Fig. 3. The said load counter poise leve' rs 38 are pivoted, as by'the knife edge pivots shown, to a bracket 40 that is mounted in a casing 41 which is attachedto and rises from the cylinder casing 27. As herein shown the bracket is attached to and depends from the top wall of said casing.

The arrangement of the load counterpoise' levers 38 above the cylinder and above the scale beams, as shown, renders the action .of the scale extremely sensitive for the reason that the tapes 36 are of such length that the pull thereof on the pendulum levers is always a direct one and there is no tendency of binding of the parts. Furthermore the provision of the. pair or'plurality of load counter-poise levers 38, arranged as shown,

and connected by the evener in the manner described, has a self-compensating action, such as to avoid unba-lancing the cylinders 26 when the scale is at rest and when resting on a support that is not level. Thus, when resting on anon-level Support, such as would tend or act to change the position of the load counter-poise levers, the increase of leverage f exerted by one lever will be compensated by a. decrease ofv leverage'exerted by the other lever, sothat the zero or initial position of the cylinder will notfbe changed. This feature of my invention may be embraced in av construction wherein ,the load counter-poise levers are not located above the cylinder, but

may be located below said cylinder or below the scale beam or beams.

wall of the scale base.

In order to avoid vibration of the beam and draw bar I may provide a steadyingdevice shown in Fig. 1 and made as'followsz designates a vertical cylinder adapted to contain oil or the like, 61 designates a piston within the cylinder made of somewhat less diameter than the cylinder and the piston 1s connected to the secondary beam 13 by the rod or stem 62. With this construction, and with the cylinder filled with a' liquid, there is provided a steadying or dampening means which gives stability of movement to the scale mechanism and which avoids vibration of the cylinder and parts connected therewith.

65 designates a weighted member within the hollow scale base that has a shank 66 which is pivoted at 67 to a bracket 68 that depends from the top Wall of the base. The said weighted member has an extension or hand piece 69, that extends forwardly through an opening 70 in the front Wall of the base. I

71 designates a link that depends from the outer weighted end of the beam 13 and is formed at its lower end with a vertical slot 72 through which the extension 69 projects.

The weighted member is locked in a nor- I mal upperposition by engagement of its extension 69 with a tooth or lug 73 on the side wall-of the slot or opening 70, and is shown in Fig. 1 in its uppermost position.

the Weighted member being thus supported free from the lower wall of the, slot in the link 71. \Vhenthe extension 69 is released from the tooth or lug-73, it drops upon the bottom of the slot 72 of thelink- 71, wherev upon the weight of the member 65 is added to the outer end of the secondary scale beam 13 'in a manner to resist the downward.

movement of the scale platform, and thereby increase the capacity of the scale to indicate totalv weight values. The weighted member 65 may increase the capacity of the f scale to any practicable number of pounds desired. In addition to said weightedmember 65, and cooperating therewith, if. de-

sired, I may provide thefollowing grad-' uated capacity increasing device: 75 designates a horizontal rod or bar that is attached to the laterally extending arms 76 on said bar to slide endwise-thereof is a weight 77. The bar 75 may be graduated, and the weight may be moved therealong to a greater or less extent so as to thereby gradually increase the capacity of the scale ofthe secondary scale beam 13. Mounted.

to indicate weight values. "Moreover the T weight 77 andthe bar 75 may be used in lieuo'f a tare beam by which to account for. a known tare of a commodity being Weighed.

It will be understood that the'embodiment of'my invention is capable of variations within the scope and-spirit of the invention, and thatthe invention is not limited to the structural details shown, except as hereinafter 'made the subject of specific claims or as imposed by the prior art. For

instance certain features of the invention may be adapted to types of scales having What I claim as new is 1. In a computing scale, a load receiving platform, a pivoted scale beam supporting 3 points below said axis to said pendulum means. I i

2. In a computing scale, a load supporting 10 5- -other forms of welght and price determ1ning members.

structure, a rotatable weight and price chart,

a supporting shaft therefor, a plurality of pendulum levers having knife edge pivots and having means of support above said chart, a draw bar and rack bar connecting said load supporting structure with said chart to operate the latter, and connections between said pendulums and chart and the load supporting structure, embracing an evener bar and flexible connections between the evener bar below the axis of said chart and pendulums.

3. In a computing scale, a load supporting a structure, a rotatable weight and price chart,

operative connections between the supporting structure and chart embracing a rack bar connected with said structure and a pinion on the chart meshing with the rack bar, compensating pendulum levers means to support the same above the chart and operative connections between said rack bar and said pendulum levers, connected to the rack bar at a point below the axis of said chart.

,4. In a computing scale, a load supporting structure, a rotatable weight and pricechart, operative connections. between the supporting structure and chart, embracing a draw bar and rack connected with said structure and a pinion on the chart meshing with the rack, a plurality of compensating pendulum levers above said pinion pro-" vided with knife-edge pivots and eccentric segmental portions, tapes trained about and attached to said segmental portlons, and an evener below said pinion to which the tapes are connected. I

5. In a computing scale, a base, a rotatable weight and price chart, a load supporting structure, comprising a scale beam, with means to operatively connect it to said chart, load counterpoising and equalizing weights above the chart, with means to also operatively connect the same to said chart, a supplemental weight pivoted to the scale base and having means to normally sustain it free from the scale beam, and means whereby said weight may be supported on the scale beam to increase'the capacity of the scale.

6. In a computing scale, a rotatable c Weight and price chart, a load supporting structure embracing a scale beam with means to operatively connect it'to said chart by a loose or pivotal connection below the axis of said chart, and a pivoted load counterpoising weight located above said chart with means to operatively connect it tosaid chart and to said load supporting structure.

having weight and price computing chart having "a pinion, a pendulum lever having a knife edge pivot, said lever having movement in a plane transverse to that of the scale beam,

a supporting fulcrum for said pendulum pivot ,mounted on the frame of the scale at a point abovethe computing Ichart, bands trained about and fixed to said lever and trained'downward to one side of'the axis of the rotatable chart, an evener, a draw bar and a rack to which the evener is connected,

said rack meshing with the pinion on the chart, a load support and a scale beam supporting the same and bar. p i

'9. In a computing'scale, a base, a supporting fulcrum stand on said base, multiple scale beams operatively connected and carried by said stand, a load platform pivotally supported on one of said beams, a support rising from the base, a cylindric casing connected to the draw sustained on said support, said casing having sight openingson the front andrear thereof, a rotative weight and price chart contained in'said casing, a bracket mounted on 'a part of the casing above said chart, gravity levers carried by said bracket, bands attached at theirvupper ends to said levers, an'evener to which the lower ends of the bands are attached, a draw bar to the up per endof which the evener is connected, the lower end thereof being connected to one of said multiple scale beams, a rack connected also to the draw bar and a pinion carrl'zied' by the chart and meshing with the rac 10. In a computing scale, a pivoted scale beam, a load carrier supported thereon, a

chart member and a cooperating indicating member above the load carrier, one of which members is rotative relatively to the other,

a draw bar connected to the scale beam and to said rotative member at a point below the axis of the latter, arid equalizing and load counter-poise pendulum means above said chart member and operatively connected to r i the movable member through said draw bar.

11. In a computing scale, a housing, gravity levers mounted in said housing, a drum supporting frame below said housing, a price and weight chart mounted in said supporting frame, a rack bar and drum pinion operatively connected, a stirrup, a draw bar and evener, with flexible means to connect the evener to the gravity levers, a dash pot, a dash pot plunger pivotally connected with a lever, a standard surrounding the draw bar and rack bar, a casing surrounding the price and weight chart,.s1ght openings in both sides of the said casing, registering wires in said openings, a base, a loadsupporting platform, operatively connected, all

substantially as shown and described.

12. In a computing scale, a rotatable weight and price chart and its operating pinion, a load supporting structure embracinga scale beam, a dash pot operatively connected to said beam, gravity counterpoise levers above the price chart, connections be tween the scale beam and said gravity levers embracing flexible members attached to the gravity levers pivotally mounted above said chart and flexible bands operatively attached to said levers and extending below the axis of the price chart, with means to connect them to the load supporting means.

H. In a computing scale, a rotative weight and price chart, load counterpoising means embracing counterpoising levers above the price chart and a scale beam, a dash pot and a dash pot. plunger operatively connected to said beam and, therethrough, to said counterpoising 'levers, substantially as and for the purpose set forth.

15. In a computing scale, a rotatable weight and price determining member, a load supporting structure embracing ascale beam, operative connections between said beamand said member embracing-a loose or pivotal connection below the rotative axis of said member, and a pivoted load counterpoising weight above said axis, with flexible means to operatively connect it to said beam.

16. In a computing scale, a rotatable weight and price determining member, a load supporting structure embracing ascale beam, a pinion on the axis of rotation of said member, a rack meshing with said pinion, means to connect said beam to said rack at a point below said pinion, and a pivoted load counterpoising weight above said pinion, with means .to operatively connect it to said rack below said pinion.

17. In a computing scale, a rotatable weight and price determining member, a load supporting structure embracing ascale beam, a pinion on the axis of rotation of said member, a rack meshing with said pinion, means to connect said beam to said rack at'a point below said pinion, a pivoted load counterpoising weight above said pinion, and a lever connected to said weight and formed with an eccentric periphery and connected to said rack bar.

18. In a computing scale, a rotatable weight and price determining member, a load supporting structure embracing ascale beam, a pinion on the axis of rotation of said member, a rack meshing with said pinion provided at its lower end with a weighted arm to hold the rack in mesh with said pinion, a connection between said. scale beam and said arm, a pivoted load counterpoising weight above said pinion provided with a lever having a periphery eccentric to ion, a' pivoted load counterpoising weight connecting said rack bar to said scale beam and to said weight, said connecting means being alined with each other.

20. In a computing scale, a. rotatable weight and price determining member, I a. load supporting structure embracing a scale beam, a pinion on the axis of rotation of said member, a rack meshing with said, pinion provided at its lower end with a weighted arm to hold the. rack in mesh .with said pinion, a. connection between said scale beam and said arm, a pivotedload counterpois ing weight abovesaid pinion provided with a lever having a periphery eccentric to the pivotal axis of said weight, a flexible band and separate connecting means respectively to connect said .lever and arm and trained 1' about said eccentric periphery, a dash pot, and a dash pot plunger connected to said beam.

21. In a computing scale, two spaced ro- -tative weight and price chart drums, a load supporting structure embracing a scale beam, a counterpoise weight above the axis of said drums and operative connections be-y tween said drums and said beam and weight, respectively connected to the drums in the space between said drums.

22. In a computing scale, two spaced rotative weight and price chart drums, a load supporting. structure embracing a scale beam, a counterpoise weight above the axis of said drums, a support therefor, a shaft disposed axially of sald drums, a pinion on the shaft between the drums, a rack between the drums engaging said pinion, a connection between the rack and said beam and a flexible means between the drums to connect said rack to said counterpoise weight.

28. In a computing scale, a rotatable weight and price determining member, a pivoted scale beam, a load support, a connection between the scale beam and said member to rotate the latter, a pivoted counterpoising weight above said member arranged to swing in a plane at a right angle to the plane of pivotal movement of said scale beam and a connection between said weight and said member.

24. In a computing scale, a rotatable weight and price determining member, a pivoted scale beam, a load support, a connection between the scale beam and rotatable 75 said member, a rack meshing wlthsald plnmember to rotate the latter, two Weighted In testimony that I claim the foregoing eounterpoising levers above said rotatable as my invention I affix my signature in the 11) member and having opposing eccentric pepresence of two Witnesses, this 3rd day of ripheries and'swingable in a plane at a right February, A. D. 1912.

5 angle to the plane of pivotal movement of CHARLES G. STRUBLER.

the beam and flexible bands to connect said Witnesses: levers and said member and trained over GRACE A. SOUTHWELL,

said eccentric peripheries. WILLIAM L. HALL. 

